Which of the following does a cell require to transport substances against an electrochemical gradient?

a. ATP
b. Na +
c. K +
d. Phosphates


a. ATP

A cell requires ATP to transport substances against an electrochemical gradient.

Biology & Microbiology

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Which blood type is rare

?

a. A only b. B only c. AB d. O e. Both AB and O

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What structures are found within bacterial cells?

A. ribosomes B. nuclei C. chloroplasts D. mitochondria

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Which one of the following is NOT a possible reason to explain why organisms would stop exponential growth?

a) Accumulation of waste products b) Exhaustion of nutrients c) Lack of available space d) Bacteria becoming dormant

Biology & Microbiology

The entire chemical reactions take place in a cell is

a. digestion b. oxidation c. metabolism

Biology & Microbiology